Home / 327,037.20-490,628.70-256,178.40

Finding the Fourth Proportional to 327,037.20, 490,628.70 and 256,178.40

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Solution

The fourth proportional to 327,037.20, 490,628.70 and 256,178.40 is: 384,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,037.20 : 490,628.70 = 256,178.40 : x
  2. Step 2: Convert to fraction form
    327,037.20/490,628.70 = 256,178.40/x
  3. Step 3: Cross multiply
    327,037.20x = 490,628.70 × 256,178.40
  4. Step 4: Simplify right side
    327,037.20x = 125,688,475,360.08
  5. Step 5: Solve for x
    x = 125,688,475,360.08/327,037.20
  6. Step 6: Final answer
    x = 384,324.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.